US Patent 11292614 Method for producing an aircraft

A method for producing an aircraft includes determining structural dimensional requirements for mating parts and for assembly tolerances between the mating parts. The method develops a datum specification for the mating parts and develops an index specification for mating the mating parts. The method performs a variation analysis based on the datum specification and the index specification to determine assembly analysis results for the mating parts. The method compares the assembly analysis results for the mating parts with the corresponding assembly tolerances defined in the structural dimensional requirements for the mating parts to verify that the datum specification and the index specification meet the assembly tolerances between the mating parts.